package org.smart4j.framework.helper;

import org.smart4j.framework.util.ReflectionUtil;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * Created by Administrator on 2016/9/20.
 */
public final class BeanHelper {
    private static final Map<Class<?>,Object> BEAN_MAP = new HashMap<Class<?>, Object>();

    static {
        System.out.println("加载 BeanHelper ");
        Set<Class<?>> beanClassSet = ClassHelper.getBeanClassSet();
        for(Class<?> beanClass : beanClassSet){
            Object obj = ReflectionUtil.newInstance(beanClass);
            BEAN_MAP.put(beanClass,obj);
        }
    }

    /**
     * 获取bean映射
     * @return
     */
    public static Map<Class<?>,Object> getBeanMap(){
        return BEAN_MAP;
    }

    /**
     * 获取bean实列
     * @param cls
     * @param <T>
     * @return
     */
    public static <T> T getBean(Class<T> cls){
        if(!BEAN_MAP.containsKey(cls)){
            throw new RuntimeException("can not get bean by class: " +cls );
        }
        return (T) BEAN_MAP.get(cls);
    }

    public static void setBean(Class<?> cls,Object obj){
        BEAN_MAP.put(cls,obj);
    }
}
